-LRB- CNN -RRB- -- Arsenal striker Eduardo has been ruled out for two weeks with a hamstring injury just days after returning from a broken leg .

Eduardo sinks to his knees after opening the scoring on his Arsenal first team comeback on Monday .

The Croatian international only made his comeback after a year out in Monday 's FA Cup fourth-round victory against Cardiff .

The 25-year-old marked his return with two goals in the 4-0 success at the Emirates Stadium , but his latest setback is not described as serious .

Manager Arsene Wenger told Arsenal TV Online : `` Eduardo is out for two weeks . He picked up a hamstring injury two minutes before I took him off . What a nightmare .

`` Nobody knows how it happened but I knew straight away after the game it would be a two-week job . It is nothing like he had before but I do know that little setbacks like this are part of being nine months out .

`` After that long out nobody plays six months on the trot . It is impossible . But at the same time it is a blow because , of course , he can score goals . He had shown that on Monday night . ''

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Arsenal striker Eduardo is ruled out for two weeks due to a hamstring problem

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The Croatian was hurt on Monday in his first game back after a year 's absence

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Eduardo scored twice against Cardiff on his return to action from a broken leg